VPU-11
Factory Programmable Simplex Inversion Voice Scrambler

Our most popular, low-cost speech inversion scrambler. It is available on any inversion frequency between 2000-4096 Hz.

Manual

VPU-12
User-Programmable Simplex Inversion Voice Scrambler

Programmable for up to 16 speech inversion codes using 4-line binary. It is programmable to any inversion frequency from 2200-4096 Hz.

Manual

VPU-15
User-Programmable Inversion Voice Scrambler

Speech inversion voice scrambler with 4 selectable inversion codes. User-programmable features include multiple inversion frequencies, ANI, Deadbeat Disable, selective call, and OTAR.

Manual